PLANTS THAT ARE CARRIED BY ANIMALS. 63 
for he is a tree planter and believes in arboriculture. His 
arbor day conies in autumn, and he needs no message from 
the governor to stimulate him to work. 
After some red squirrels had been given black walnuts, 
a member of my family saw them hide the nuts in all 
conceivable places, and in some instances place them 
above a cluster of small branches of a tree for support 
where three or more twigs spread from nearly the same 
place. Here the nuts, one in a place, were left till perhaps 
shaken to the ground by a severe wind or by some other 
cause. In one winter, without hunting for them, six to 
ten places were found in one neighborhood of Michigan, 
where something had placed a single walnut or acorn in 
the forks of small branches. In some cases a severe wind 
could have dislodged the nut. 
On February 18, 1897, I found a single black walnut 
held by small branches of a red oak. 
The oak was an inch and a half in diameter, and the 
nut was about six feet from the ground. The nearest 
bearing tree was fully three hundred long steps distant. 
We can imagine that, through fright or other causes, 
a squirrel might be suddenly interrupted while carrying 
nuts, and might then drop them to the ground, where 
later a tree would be started. 
38. Birds scatter nuts. — The work of birds in scatter- 
ing seeds and fruits has long been recognized. 1 
1 In the fall of 1897, Prof. C. F. Wheeler saw a blue jay fly from a white 
oak tree with an acorn in its mouth. The bird went to the ground four or 
